St. John’s, NL

Building permits in St. John’s

St. John’s lists renovations and extensions, additions, decks, fences, pools, structural or floor-plan changes and demolitions among projects that can require a building permit.

Official sources checked Sep. 24, 2026

Permit rules by project

Pick the project that matches your work. These are starting rules for St. John’s; property-specific zoning, heritage and trade approvals can still apply.

Decks

Permit required

St. John’s explicitly lists building a deck as work needing a building permit and requires a deck checklist/specification form with the application.

Sheds & accessory buildings

Permit required

St. John’s states that renovations/extensions to accessory buildings such as sheds require building permits and provides an accessory-building permit checklist.

Basement renovations

Depends on scope

St. John’s requires permits for renovations and structural/floor-plan modifications; basement permit needs depend on the exact renovation scope.

Secondary suites & ADUs

Permit required

St. John’s building-permit application framework includes apartments/secondary suites, and additions including apartments are listed as permit work.

Interior alterations

Depends on scope

St. John’s requires permits for renovations and floor-plan modifications; the exact interior scope determines the application and documentation.

Garages / carports

Permit required

St. John’s requires building permits for accessory buildings and provides an accessory-building checklist covering structures such as garages and sheds.

Plumbing / HVAC

Depends on scope

St. John’s states that separate permits are required for electrical and plumbing work; HVAC/mechanical requirements depend on the specific system and project.

Retaining walls

Confirm with city

St. John’s current building-permit information does not give one residential retaining-wall permit rule that applies to every property. Confirm wall height, location and structural conditions with the City.

Apply or ask St. John’s

Use the municipality’s permit office for current forms, fees, drawings and questions about your property.

St. John's Permit Counter

Address
John J. Murphy Building (City Hall Annex), 3rd floor, St. John's, NL
Contact the permit office ↗

Your application route

Open the official permit page ↗

Use the official permit page to confirm project requirements, forms, fees and the current application process.

Other approvals

St. John’s handles municipal building/development/plumbing requirements. Electrical work is a separate provincial Government Services permit/inspection stream; do not treat the municipal building permit as electrical authorization. Province/authority source ↗

Good to know in St. John’s

  • Building Inspection staff review plans and inspect work for compliance with the applicable building code, the St. John’s Building By-Law and other rules.
  • A municipal permit does not necessarily cover every Newfoundland and Labrador zoning, servicing, provincial or utility requirement tied to the work.

Official sources

Use these official links to confirm the current rule for your St. John’s property.

View 1 official source

Sources checked Sep. 24, 2026. Requirements can change; the municipality makes the final permit decision.

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